On a mission of mercy, Jennifer Hart (Stefanie Powers) is in Germany to donate bone marrow to Maximilian, a young leukemia patient. Following the operation, she plans to spend a romantic anniversary in Munich with her husband Jonathan (Robert Wagner). The bone marrow clinic's director, Peter Donner, is surprised by Jennifer's uncanny resemblance to his French fiancee, Simone Grohe. When she goes missing, Jennifer steps in to play the role of Simone to save Peter the embarrassment of an explanation to his cousin and benefactor Karl Von Ostenberg (George Hamilton) at the lavish engagement party. But, of course, it is Karl who kidnapped Simone in order to control the fate of Peter's inheritance and now Jennifer is in as much danger as Simone! Once again the Harts tackle danger and mystery with their usual devil-may-care charm and romance. Newly remastered.